Peace at last?

It looks like the end of a war that has been going on intermittently for 114 years - one year for every sura of the Koran. The Sulu Archipelago - the Muslim southern half of the Philippines - was never successfully occupied by the Spanish, but it was handed over to the United States (along with Cuba and Puerto Rico) by the Treaty of Paris of 1898, and it has been fighting control from Manila ever since. Now at last an outline agreement has been reached between the Philippines Government and the Moros resistance movement for the islands to achieve regional autonomy. This is the sort of sensible agreement which should be possible in other areas of the world, where a local majority is in conflict with a wider political unit, so why do we have so many little wars going on?